From 65e254deac95717877e89dca2a5432fcd2196625 Mon Sep 17 00:00:00 2001
From: Steven Levithan <steves_list@hotmail.com>
Date: Fri, 22 Nov 2024 14:17:59 +0100
Subject: [PATCH] Fix escaping in nested classes in verbose mode

---
 README.md       | 4 ++--
 src/generate.js | 7 ++++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index e4b33bc..aed9380 100644
--- a/README.md
+++ b/README.md
@@ -145,8 +145,8 @@ One of `'default'` *(default)* or `'strict'`.
 
 Sets the level of emulation rigor/strictness.
 
-- `default`: Permits a few close approximations in order to support additional features.
-- `strict`: Throw if the pattern can't be emulated with identical behavior (even in rare edge cases) for the given `target`.
+- **Default:** Permits a few close approximations in order to support additional features.
+- **Strict:** Error if the pattern can't be emulated with identical behavior (even in rare edge cases) for the given `target`.
 
 <details>
   <summary>More details</summary>
diff --git a/src/generate.js b/src/generate.js
index 92a9902..a4a5904 100644
--- a/src/generate.js
+++ b/src/generate.js
@@ -296,8 +296,13 @@ function genCharacterClass({negate, parent, elements}, state, gen) {
   if (!state.useFlagV && parent.type === AstTypes.CharacterClass) {
     throw new Error('Use of nested character class requires min target ES2024');
   }
+  const genClass = () => `[${negate ? '^' : ''}${elements.map(gen).join('')}]`;
+  if (state.inCharClass) {
+    return genClass();
+  }
+  // For the outermost char class, set state
   state.inCharClass = true;
-  const result = `[${negate ? '^' : ''}${elements.map(gen).join('')}]`;
+  const result = genClass();
   state.inCharClass = false;
   return result;
 }